Ventilation and air flow control

ABSTRACT

Disclosed is an electrical cabinet with associated air flow direction control system. The cabinet has a front, rear, a first side and a second side. The front side has openings to accept flow of cool air into the cabinet and the rear side has openings for exit of warm air from the rear side of the cabinet. The front, rear, first side and second side define an interior space are configured to house heat generating electrical equipment. A frame is adjacent the rear side of the cabinet. The frame has a first frame side and a second frame side. Louvers are located adjacent the rear of the cabinet. The louvers extend between the first frame side and the second frame side. Each louver has a face positioned at an angle to direct the warm air exiting the cabinet other than perpendicular to the rear of the cabinet.

PRIORITY CLAIM

The application claims priority to and the benefit of U.S. ProvisionalPatent Application No. 62/394,680 filed on Sep. 14, 2016 titledVentilation and Air Flow Control.

FIELD OF THE INVENTION

This invention relates to cooling and heating systems and in particularto a system for air flow control in electrical equipment locations, suchas co-location facility designs.

RELATED ART

Numerous applications benefit from or require air flow to provide freshor non-contaminated airflow, or airflow for heating, cooling, humiditycontrol or drying. One example environment that requires airflow iselectrical equipment, such as equipment located in data centers andserver co-location facilities.

In such facilities, rows of electronics equipment, such as servers,power supplies, and network communication devices are stored andinterconnected or connected to a network, such as the Internet or directnetwork connections to remote systems. In many facilities andapplications, cabinets are arranged side by side and each cabinet mayhouse multiple server cards, communication cards, or power supplies. Asis widely understood, electrical equipment generates heat and this heatmust be removed from the electrical equipment to ensure that theelectrical equipment is maintained within manufacturer's specifiedtemperature range.

In some instances, the electrical equipment is separately owned suchthat the owner of the electrical equipment may have its own temperaturerange for operation or other operating parameters which must be met. Inaddition, the activity level of the servers may change based on thenature of the server itself. For example, some servers may be mostactive during work hours, while other servers may be primarily active onthe weekends and holidays. This will thus affect the time at which heatis generated. In many instances, the owner of the facilities manages theinstallation and the servers within the facility, and is responsible formaintaining the servers and the server environment.

As mentioned above, electrical equipment generates heat during operationand the amount of heat generated will vary over time, typically inrelation to the activity level of the electronic equipment. To maintainthe equipment within a defined safe operating range, cooling air flow istypically used to conduct the heat away from the equipment. Failure tomaintain the electrical equipment within a defined safe operatingtemperate range will result in equipment shut down or equipment failure.

Prior innovations by Switch, Ltd. have advanced the efficiency andtechnology of data centers. Switch, Ltd invented and introduced to theindustry cabinets of electronic equipment placed into rows, and furtherto have parallel rows of equipment configured back-to back so that eachrow of equipment generally forces the heat from a front of the cabinet,over the electronic equipment toward a common area behind the cabinets.This common area, as introduced by Switch, Ltd., is now referred to inthe industry as an enclosed hot aisle, as that aisle generally containsair warmed from passing through the cabinets containing the electricalequipment. Consequently, the area in front of the equipment is oftenreferred to as a cold aisle. In addition, systems that sense thetemperature in the hot aisle and the cold aisle and provide a feedbackare provided. Based on this feedback, additional cooling mayautomatically be provided to the cool aisle if the cool aisle exceeds apredetermined temperature. Likewise, servers and power supplies areknown to have built in temperature sensors to provide an alert or ashutdown signal if the server/power supply temperature exceeds apredetermined safe threshold.

However, improvements in the overall control would be beneficial tonumerous aspect of data center operation, particularly for data centersthat utilize Switch, Ltd., improvements or in other data center designsto control and promote efficient air flow.

SUMMARY

To overcome the drawbacks of the prior art, disclosed is an electricalcabinet with associated air flow direction control system. In oneembodiment the cabinet has a front side, rear side, a first side and asecond side. The front side has one or more openings to accept flow ofcool air into the cabinet and the rear side has one or more openings forexit of warm air from the rear side of the cabinet. The front side, rearside, first side and second side define an interior space configured tohouse heat generating electrical equipment within the housing. A frameis adjacent the rear side of the cabinet and the frame has a first frameside and a second frame side. Two or more louvers are adjacent the rearside of the cabinet and extend between the first frame side and thesecond frame side. In this example embodiment, at least one louver hasat least one face positioned at an angle to direct the warm air exitingthe cabinets in a direction other than perpendicular to the rear side ofthe cabinet.

This embodiment may further include two or more legs connected to theframe such that the two or more legs cooperate with the frame to adjusta height of the frame in relation to a floor. The frame may bereleasably connected to the cabinet adjacent the rear side of thecabinet. In addition, the two or more louvers may be fixed to the framethereby fixing the angle associated with the louver. Alternatively, thetwo or more louvers may be movable in relation to the frame from a firstposition to a second position such that the first position establishes afirst louver angle and the second position establishes a second louverangle. Although described in relation to a first position and a secondposition, the louvers may be set at any position, either manually orautomatically, either in steps, or through any other movement control.The louvers may be opened or completely closed, or moved to any positionbetween open and closed. In one embodiment, a stepper motor is used. Thelouvers may be moved by actuators, either manual, mechanical, orautomated, or any other movement control devices. The louver positioncontrol devices may receive signal, such as an electrical or wirelesssignal, from a data center management system which monitors and controlsthe entire data center including overall and specific locationtemperature control, power usage, and airflow control. The data centermanagement system includes one or more computer which received sensordata and process the sensor data to generate automated or manuallygenerated control signals that can control the position of the louvers.It is also contemplated that the louver position control devices mayreceive control signals directly from an air flow or temperature sensorslocated near the louvers for automated control or as a back-up controlmethod.

The frame may include at least one motor associated with at least oneframe such that the at least one motor is responsive to a control signalto change the angle of at least one louver. In one configuration, afirst group of the two or more louvers are positioned at a first angleand a second group of two or more louvers are position at a secondangle.

Also disclosed is an arrangement of cabinets with associated air flowdirection control system. This embodiment includes a first row ofcabinets comprising three or more cabinets and a second row of cabinetscomprising three or more cabinets. The cabinets in the first row ofcabinets and the second row of cabinets have a front side, rear side, afirst side and a second side. The front side has one or more frontopenings to accept flow of cool air into the cabinet and the rear sidehas one or more rear openings for exit of warm air from the rear side ofthe cabinet. The front side, rear side, first side and second sidedefine an interior space configured to house heat generating electricalequipment within the housing, such that the rear side of the front rowof cabinets faces the rear side of the second row of cabinets therebyestablishing a hot aisle between the first row of cabinets, second rowof cabinets, a floor, a ceiling. Also part of this embodiment is a firstset of louvers supported by a first frame adjacent the rear side of thefirst row of cabinets. The first set of louvers extend at least across aportion of the rear side of the cabinets that form the first row ofcabinets. A second set of louvers are supported by a second frameadjacent the rear side of the second row of cabinets. The second set oflouvers extend at least across a portion of the rear side of thecabinets that form the first row of cabinets.

In one embodiment, the first set of louvers and the second set oflouvers are positioned at an angle to direct the warm air exiting thecabinets upward to the ceiling and the ceiling is configured to vent thewarm air in the hot aisle from the hot aisle. The first set of louversmay be adjustable between a first position, a second position and athird position such that the first position directs warm airflow upward,the second position directs warm air flow perpendicular to the rear faceof the cabinets and the third position inhibits airflow from the one ormore rear openings. Although discussed as a first, second, and thirdposition, it is understood that the louvers may be adjusted to anyposition. The arrangement of cabinets may further include two or morelegs associated with the frame such that the two or more legs areadjustable to change a height of the louvers relative to the floor. Itis further contemplated that at least one motor may be associated withat least one louver. The motor being responsive to a motor controlsignal to change the angle of the at least one louver.

It is also contemplated that a first group of the first set of louversare positioned at a first angle and a second group of the second set oflouvers are positioned at a second angle. In one embodiment thearrangement of cabinets also includes one or more temperature sensors,one or more air flow sensor, or both configured to generate sensorsignals, and a controller configured to receive and process sensorsignals. Responsive to the processing of the sensor signals, thecontroller generates the motor control signals which control theposition of at least one louver and may also control fans located in oras part of the louver.

Also disclosed is a method for maintaining temperature, within apredetermined range, within a cabinet storing electrical equipment. Inone embodiment this method comprises providing a first row of cabinetsand providing a second row of cabinets. The cabinets in the first row ofcabinets and the second row of cabinets having a front side and a rearside. The front side has one or more front openings to accept flow ofcool air into the cabinet and the rear side has one or more rearopenings for exit of warm air from the rear side of the cabinet. Thefront side and rear side defining an interior space configured to househeat generating electrical equipment within the interior space. The rearside of the front row of cabinets faces the rear side of the second rowof cabinets thereby establishing a hot aisle between the first row ofcabinets, second row of cabinets, a floor, a ceiling.

This method also includes adjusting a first set of louvers to directairflow exiting the rear side of the cabinet in a directionnon-perpendicular to the rear side of the first row of cabinet. Thefirst set of louvers is supported by a first frame which is adjacent therear side of the first row of cabinets and the first set of louversextend at least across at least a portion of the rear side of thecabinets that form the first row of cabinets. Adjusting a second set oflouvers directs airflow exiting the rear side of the cabinet in adirection non-perpendicular to the rear side of the second row ofcabinet. The second set of louvers is supported by a second frame whichis adjacent the rear side of the second row of cabinets and the secondset of louvers extend across at least a portion of the rear side of thecabinets that form the second row of cabinets.

To maintain temperature, cooling airflow is presented to the front ofthe first row and second row of cabinets. The cooling airflow flows fromthe front of the cabinet toward the rear of the cabinets resulting inthe cooling airflow becoming warm airflow. After exiting the cabinet orwhen exiting the cabinet, the warm airflow is directed by the louvers ofthe first row of cabinets and the second row of cabinets toward one ormore warm air vents associated with the hot aisle. In one embodiment thewarm air vents are on or in the ceiling. The louvers may direct the airflow in the same direction or different directions based on the locationof the warm air vents. In one embodiment, the warm air from the firstrow of cabinets is directed by the louvers in a first direction and thewarm air from the second row of cabinets is directed by the louvers in asecond direction. In one configuration, the first direction and thesecond direction are not opposing directions. In one configuration, thefirst direction and the second direction are toward the warm air vent inthe hot aisle. The hot air may be vented to the exterior of a building,used for building heating, or this method of operation may cool the warmairflow entering the warm air one or more warm air vents to create coolairflow and then return the cool airflow to the front of the cabinets.

In one configuration, the rear side of the first row of cabinets facesthe rear side of the second row of cabinets. At least one louver may beadjustable by a motor and the motor responsive to a motor control signalfrom a controller. It is also contemplated that one or more temperaturesensors, airflow sensors, or both are provided and are configured toprovide a sensor signal to the controller and the motor control signalresponsive to the sensor signal. In one embodiment, this method ofoperation also includes increasing air flow with one or more fansmounted to at least one louver such that adjusting a louver adjusts theone or more fans mounted to the adjusted louver. To change the height ofthe frames that hold the louvers, two or more legs may be heightadjusted to change a height of the first set of louvers and the secondset of louvers.

Other systems, methods, features and advantages of the invention will beor will become apparent to one with skill in the art upon examination ofthe following figures and detailed description. It is intended that allsuch additional systems, methods, features and advantages be includedwithin this description, be within the scope of the invention, and beprotected by the accompanying claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The components in the figures are not necessarily to scale, emphasisinstead being placed upon illustrating the principles of the invention.In the figures, like reference numerals designate corresponding partsthroughout the different views.

FIG. 1A illustrates a floor design used in an electrical equipment room,such as a data center or co-location facility according to the presentinvention.

FIG. 1B illustrates floor-based components disposed over the floordesign of the electrical equipment room, such as a co-location facility,according to the present invention.

FIG. 1C illustrates a perspective cut-away view along line c-c from FIG.1A.

FIG. 2 illustrates a top plan view of an alternative embodiment of thelocation and cabinet layout in an electrical equipment room.

FIG. 3 illustrates a side plan view of the server and cabinet layout inan electrical equipment room of FIG. 2.

FIG. 4 illustrates an improved cabinet layout.

FIG. 5 illustrates an exemplary cabinet with back mounted louvers.

FIG. 6A illustrates a perspective view of louvers and frame.

FIG. 6B illustrates a side view of the louvers of FIG. 6A.

FIG. 7A illustrates a perspective view of louvers and frame.

FIG. 7B illustrates a side view of the louvers of FIG. 7A.

FIG. 8A illustrates a perspective view of louvers and frame.

FIG. 8B illustrates a side view of the louvers of FIG. 8A.

FIG. 9A illustrates a perspective view of louvers and frame.

FIG. 9B illustrates a side view of the louvers of FIG. 9A.

FIG. 10 illustrates an exemplary vertically aligned louver position.

FIG. 11 illustrates an exemplary diagonally aligned louver position.

FIG. 12 illustrates an example louver having integrated fans.

FIG. 13A and FIG. 13B illustrate exemplary adjustable legs for a framecontaining louvers for use at the back of a cabinet.

FIG. 14 is a block diagram showing example or representative computingdevices and associated elements.

DETAILED DESCRIPTION

FIG. 1A illustrates a floor design used in an electrical equipment room,such as for a data center or co-location facility, according to thepresent invention. The preferred embodiment discussed herein usesparallel rows of equipment configured back-to back so that each row ofequipment generally forces the heat from the electronic equipmenttowards a hot aisle, thus also establishing a cold aisle in the front ofthe equipment. The cold aisles in FIG. 1A are illustrated at the dottedline block 60 and the hot aisles are illustrated at the dotted lineblock 62. One feature of the present invention is the provision formarking the floor 50 to explicitly show the various areas of thefacility. As illustrated, the hot aisle 62 has a central area 52 that istiled, painted, taped or otherwise marked to indicate that it is centerarea of the hot aisle 62, also referred to as a central hot air area.The typical dimensions of the central area 52 are typically in the rangeof 2′-4′ across the width, with a row length corresponding to the numberof electronic cabinets in the row. Marking with tiles is preferable asthe marking will last, and tiles that are red in color, corresponding tothe generation of heat, have been found preferable. Around this centerarea 52 is a perimeter area 54, over which the cabinets are installed.This perimeter area 54 is marked in another manner, such as using a greytile that is different in color from the center area 52. Around theperimeter area 54 is an outside area 56, which is marked in yet adifferent manner, such as using a light grey tile. The placement ofthese markings for areas 52, 54 and 56 on the floor of the facility,preferably prior to moving any equipment onto the floor, allows for avisual correspondence on the floor of the various hot and cold aisles.In particular, when installing cabinets over the perimeter 54 are, thearea that is for the front of the cabinet that will face the cold aisle,and thus the area for the back of the cabinet for the hot aisle, isreadily apparent.

FIG. 1B illustrates floor-based components disposed over the floordesign of the co-location facility according to the present invention.FIG. 1B also shows additional area of the floor, which in thisembodiment is provided to illustrate interaction of the electronicsequipment with the evaporators of the air conditioning units. In theembodiment described with respect to FIG. 1B, certain features areincluded so that conventional equipment, particularly conventional airconditioning equipment, can effectively be used While still creating thedesired air flow patterns of the present invention as described herein.

Before describing the components in FIG. 1B, an aspect of the presentinvention is to isolate the hot air exhaust from the areas that requirecooling as much as possible, and to also create air flows in which theair moves through the exhaust system, into the air conditioning system,through the air conditioning ducts and out to the cool equipment in avery rapid manner. In particular, the amount of circulation establishedaccording to the present invention moves air at a volume such that theentire volume of air in the facility recirculates rapidly. In oneembodiment recirculation occurs at least once every 10 minutes,preferably once every 5 minutes, and for maximum cooling once everyminute. it has been found that this amount of recirculation, incombination with the air flows established by the present invention,considerably reduce the temperature in the facility in anenvironmentally efficient manner.

Cabinets 110 shown in FIG. 1B are placed generally over the sides of theperimeter 54 as described, in rows. Different rows are thus shown withcabinets 110 (a-f), with each letter indicating a different row. Alsoincluded within the rows are electrical equipment 170 to which theelectronic equipment in each of the cabinets 110 connect as describedfurther herein, as well as power equipment 180, containing circuitbreakers as is known to protect against energy spikes and the like, thatis used to supply power along wires to the electronics equipment in eachof the cabinets 110 connect as described further herein. Airconditioning units 120 include the evaporator units 120 (1-6) that areshown being physically separated by some type of barrier from the area56 described previously with respect to FIG. 1A. The condenser units ofthe air conditioning system that receive the warmed refrigerant/wateralong lines 122 and are disposed outside the walls of the facility arenot shown. This physical separation is implemented in order to establishwarm exhaust channel area 240 separate from the physical space, whichwarm air area will connect to a separate warm air area in the ceilingand allow the warm air to flow into the exhaust channel area 240 andenter into intake ducts of evaporator air conditioning equipment 120, aswill be described. This feature allows the usage of conventionalevaporator air conditioning equipment that has air intakes at the bottomof the unit, as well as allows for usage of different air conditioningequipment types, while still maintaining an efficient airflow throughoutthe entire facility.

FIG. 1C illustrates a perspective cut-away view along line c-c from FIG.1A of the FIG. 1A. Additionally illustrated are the false ceiling 140and the actual ceiling 150, which have a gap that is preferably at least1.5-3 feet and advantageously at least 15 feet, as the higher theceiling the more the ward air rises (and thus also stays further awayfrom the equipment in the cabinets 110). The false ceiling 140 ispreferably made of tiles that can be inserted into a suspended ceilingas is known, which tiles preferably have are drywall vinyl tiles, whichexhibit a greater mass than many conventional tiles. Also shown arearrows that illustrate the air floe being centrally lifted upward fromthe hot air area containment chamber (hot aisle) 210 formed by thethermal shields 400 to the area between the false ceiling 140 and theactual ceiling 150, and the flow within the ceiling toward the warmexhaust channel area 240, and then downward into the warm exhaustchannel area 240 with the wall 130 separating the area 56 and the warmexhaust channel area 240. Also shown are arrows that take cold air fromthe cold air ducts 310 and insert the air into the cold aisles 60.

Though the arrows in the drawing are directed straight downward, thevents themselves can be adjusted to force or direct for directionaldownward flow at various angles. In a preferred embodiment, each of thevents have a remote-controlled actuator that allows for the offsitecontrol of the vents, both in terms of direction and volume of air letout of each vent. This allows precise control such that if a particulararea is hot, more cold air can be directed thereto, and this can bedetected (using detectors not shown), and then adjusted for offsite.

FIG. 2 illustrates a top plan view of an alternative embodiment of theroom location and cabinet layout in an electrical equipment room. Thisis but one example embodiment and those of ordinary skill in the artwill understand that other embodiment and layouts are possible withoutdeparting from the scope of the claims that follow.

As shown a building wall or containment wall 208 is shown which definesan inner space. Within the interior space are three main elements,normally one or more hot aisles 212, one or more cold aisles 216 and oneor more rows of cabinets 220. The cabinets are configured to enclose andsupport electrical equipment, such as but not limited to servers,communication equipment, power supplies, control systems, routers,switches and switching equipment, memory, or any other electronic orelectrical devices.

The cabinets are located between the hot aisles 212 and the cold aisles216 such that air flow passes through the cabinets 220, such as from thefront of the cabinet toward the back of the cabinet. The air flowincludes cool air flow 224 which enters the cabinets 220 to cool theelectrical equipment thereby conducting heat from the electricalequipment to form hot air flow 230 in the hot aisle. As shown, the rowsof cabinets 220A, 220B placed back to back to separate the hot aisle 212from the cold aisles 216. The front of the cabinet may be at a higherpressure than the back of the cabinet thereby causing airflow fromcabinet front to cabinet back. One or more fans may be associated withthe cabinets and/or the electrical equipment located in the cabinet tocreate air flow or increase air flow.

Also shown in FIG. 2 is a ventilation system that includes one or morefans 240 and a cooling system 244. The fans 240 move the air within thecold aisle 216 and/or the hot aisle 212. The cooling system 244 removesthe heat from the hot air flow 230 entering from the hot aisle to createcold air flow 224 which is pushed back into the cold aisle 216. Aircirculates in this manner thereby maintaining a desired operatingtemperature of the electrical equipment.

FIG. 3 illustrates a side plan view of the server and cabinet layout inan electrical equipment room of FIG. 2. As compared to FIG. 2, identicalelements are labeled with identical reference numbers. As shown in theside view of FIG. 3 a hot aisle 212 is between rows of cabinets 220A,220B. Between the cabinets is a hot aisle 212. In this embodiment, thefront of the cabinets 220 faces the cold aisle 216 while the back of thecabinets 312 are in the hot aisle 212.

In operation, as cold air flow 224 is blown into the cold aisle 216through one or more vents 316, it passes through the cabinets 220A, 220Binto the hot aisle 212. As a drawback to the prior art, because thecabinets 220A, 220B have backs 312 which are facing each other, the hotair exiting the back 312 of cabinets 220A is directed into the hot airexiting the back 312 of cabinet 220B. Thus, two opposing flows 340 ofhot air are created in the hot aisle 212. This generates circular airflow patterns, referred to herein as eddies 340 and dead spots 344. Theopposing air flow 340 and eddies 344 inhibits and prevents all of thehot air 230 from exiting the hot aisle 212 through the vent 320.

As can be appreciated, the opposing air flow 340 and eddies 344 createhots spots within the hot aisle and also inhibit the free flow of air inthe hot aisle. In some instances, the opposing air flow 340 in the upperareas of the hot aisle creates an air curtain which inhibits air flowfrom the hot aisle 212 and within the cold aisle 216. In some instances,the hot aisle 212 is at a higher pressure than the cold aisle 216 whichin turn inhibits air flow. This is a significant disadvantage forcooling efficacy. In other situations, the air flow through the cabinetsmay be too fast or faster than needed to maintain a desired cabinettemperature. This wastes energy by dumping cool air into the hot aisle,while at the same time denying that cool air to other cabinets in needof cooling. As such, the vents may be adjusted to reduce air flowthrough a cabinet, thereby causing additional airflow through othercabinets and reducing cooling costs. In yet other situations, the airflow through cabinets may be occurring when the cabinet is not populatedwith electrical equipment. In such a situation, the lack of equipmentmay create a low pressure air flow path that flows high volumes of airthrough a cabinet with no or minimal electrical equipment. Thus coolingis not needed in the cabinet that is only sparsely populated with heatgenerating electrical equipment. In addition, some cabinets may requiremore cooling due to the heat generating nature of the equipment in thecabinet or the preferred operating temperatures of the equipment in thecabinet.

FIG. 4 illustrates an improved cabinet layout. As compared to FIGS. 2and 3, identical elements are labeled with identical reference numbers.In FIG. 4, the back 312 of the cabinets 220A, 220B are fitted withlouvers 404 which may be adjusted to direct air flow in a desireddirection, or reduce air flow. As a result, the upward air flow 408 doesnot flow in opposing direction creating eddies or dead spots but insteadis directed in the direction of the hot air vent 320. This improvedcooling, provides even and uniform cooling across all parts of the backof the cabinets, and provides control of cooling based on factors suchas cabinet usage.

FIG. 5 illustrates an exemplary cabinet with back mounted louvers. Thisis but one possible embodiment and as such it is contemplated that oneof ordinary skill in the art will arrive at different embodiments whichdo not depart from the claims that follow. In this embodiment a cabinet500 is shown with two opposing side panels 504 and a top and bottom. Thetop and bottom may be formed by the same material as the sides or formedby a ceiling and floor respectively. The cabinet has a front side 508and a rear or back side 512. The sides 504, top, and bottom define aninterior. The interior is configured to house electrical equipment andmay include brackets 520 or mounting points on the interior of thecabinet 500 to support and secure the electrical equipment. The sides504 of the cabinets 500 may have openings to allow for wires, pipes,conduits or other elements to access the interior of the cabinet.

Mounted at the back of the cabinets 500 is a frame 530 having a firstside 534 and a second side 536. The frame 530 may optionally include atop frame portion and bottom frame portion. Mounted between the firstside 534 and the second side 536 are louvers 540 that are angled upwardto direct the air flow from the rear of the cabinets upward. Betweeneach louver 540 is an open space 544 which allows for the passage ofair. The louvers 540 may be at any angle. As discussed below in greaterdetail, the louvers may be fixed in position, as shown in FIG. 5, ormovable to thereby adjust the direction of the air flow and the size ofthe openings 544. If adjustable, the louvers may pivot about a centralpin (not shown) or axis, in an arced recess, or in any other way nowknown in the art or develop in the future.

At the bottom of the frame 530 are legs 550 that support the frame on afloor. The legs may be of fixed length, or adjustable in height to movethe frame 530 and associated louvers 540 upward or downward to alignwith the cabinet. Although not shown in this embodiment, it iscontemplated that the frame may also have rails as part of the framethat expand the height of the frame. This may be useful if the cabinetheight changes or if different height cabinets are in use or to expandthe frame and louver dimensions to cover the full height or width of theback side of the cabinet, other structure or any opening. The legs orframe may mount to the floor to provide a more secure attachment.

One or more brackets 560 may be attached to or be integral with theframe 530 to attach the frame (and louvers) to the back of the cabinet504. Bolts, screws, magnetics, slots, clips, or any other fastener maybe used to secure the frame 530 to the cabinet 500. It is alsocontemplated that hinges may be used to connect the frame(s) (andlouvers) to the cabinets. Hinges allow the frame to swing out of the wayfor access to the back of the cabinet.

In operation, the air exiting the back of the cabinet 500 hits thelouvers and is directed upward (or in any direction based on thelouvers). When arranged as rows of cabinets as shown in FIG. 5, thelouvers angle upward eliminate the air flow from the back to backcabinets being opposing and thereby preventing dead spots and eddies.This in turn increases cooling efficiency and effectiveness.

FIG. 6A illustrates a perspective view of louvers and frame. FIG. 6Billustrates a side view of the louvers. FIGS. 6A and 6B are discussedtogether. FIGS. 6A and 6B illustrate a frame 604 around louvers 608. Theframe 604 may include a top 612, bottom 616 and a first and second sides620, 624. In this embodiment, the louvers 608 are fixed at an upwardangle. In this embodiment and all embodiments described herein thelouvers may any size or shape. In this embodiment, the louvers 608 arestraight but in other embodiment the louvers may have another shape suchas but not limited to curved, angled, or oval, or any other shape orpattern.

FIG. 7A illustrates a perspective view of louvers and frame. FIG. 7Billustrates a side view of the louvers. FIGS. 7A and 7B are discussedtogether. Identical or similar items are labeled with identicalreference numbers. It is contemplated that the louvers may beadjustable. As shown the louvers 608 are adjusted to a horizontalposition within the frame 604. This arrangement provides for maximum airflow, but the air flow is directed directly out the back of the cabinet.

FIG. 8A illustrates a perspective view of louvers and frame. FIG. 8Billustrates a side view of the louvers. FIGS. 8A and 8B are discussedtogether. Identical or similar items are labeled with identicalreference numbers. It is contemplated that the louvers may beadjustable. As shown the louvers 608 are adjusted to a generallyvertical position within the frame 604 to block or inhibit air flow.This arrangement provides for minimal air flow. In relation to FIGS. 6A,7A and 8A, the louvers 608 may be set at any angle.

FIG. 9A illustrates a perspective view of louvers and frame. FIG. 9Billustrates a side view of the louvers. FIGS. 9A and 9B are discussedtogether. In FIGS. 9A and 9B, identical or similar items are labeledwith identical reference numbers as compared to

FIGS. 6A and 6B. It is contemplated that the louvers may be adjustable.As shown the louvers 608 are adjusted to different angles depending onthe location of the louvers in the frame 604. Within a single frame 604the louvers may be pointed in the upward direction 904, alignedhorizontal 908 for maximum air flow, or shut 912 to inhibit or preventair flow. It is also contemplated that some louvers may be removedthereby allowing free passage of some air flow (where there are nolouvers) while directing other airflow upward based on the louver angle.

In this embodiment, it is contemplated that louvers 608 are not fixed,but are movable between positions. In this embodiment, the louvers arelinked to or controlled by motors 924. A motor 924 may be dedicated toeach louver 608 or multiple louvers may be controlled by a single motor.Any type motor and/or gear/arm assembly may be used. For example, an armmay extend vertically and connects to one or more louvers such thatmovement of the arm moves all the louvers which the arm connects. In oneembodiment, a stepper motor is used to precisely control louverposition.

The stepper motors 924 are controlled by a controller 920. Thecontroller 920 may comprise a computer, processor, or any other controlsystem. It is contemplated that memory may be associated with thecontroller 920 and the non-transitory memory stores non-transitorymachine readable or executable code. The controller 920 may interfaceand communicate with the memory and thus be configured to executenon-transitory machine readable or executable code based on one or moreinputs or settings. In one embodiment, the settings are stored in thememory and are user accessible and changeable thereby making the louverposition user controllable. The louver position may also be based oninput from one or more sensors data 930, such as from temperaturesensors, airflow sensors, manual control by a user, or programmedcontrol from an outside or secondary input. The temperature sensor maybe located at any location inside the cabinets, on or near theelectrical equipment in each cabinet, on or near the louvers, or at anylocation in the hot aisle. Likewise, the airflow sensors may be at anyof the locations. By using sensor data to control louver position, areal time, dynamic feedback system is established that maintains coolingwhile concurrently minimizing energy use and air speed.

FIG. 10 illustrates exemplary vertically aligned louver positions. InFIG. 10 identical or similar items are labeled with identical referencenumbers as compared to FIGS. 6A and 6B. As shown, the louvers 608 arealigned vertically. As discussed above, the louvers may be fixed,manually adjustable, or automatically position controlled to differentangles in the frame 604. Aligning the louvers vertically directs the airflow toward either the side of cabinet, such as if the hot air ventingfor the hot aisle were at a side of the hot aisle, and not the top ofthe hot aisle.

FIG. 11 illustrates exemplary diagonally aligned louver position. InFIG. 11 identical or similar items are labeled with identical referencenumbers as compared to FIGS. 6A and 6B. As shown, the louvers 608 arealigned diagonally. As discussed above, the louvers may be fixed,manually adjustable, or automatically position controlled to differentangles in the frame 604. Aligning the louvers diagonally directs the airflow diagonally out the back of the cabinet.

FIG. 12 illustrates an example louver having integrated fans. This isbut one possible arrangement of fans within a louver and other designsare possible that depart from that shown in FIG. 12. As shown, a louver1200 includes a louver frame 1208 having a top 1212 and a bottom 1204with two opposing sides 1212. The frame may be solid or partially open.One or more sections within the louver 1200 form openings 1240 that passthrough the louver from the front size 1244 to the back side 1248.Although open for air flow, one or more screens, grates, or otherelements may be disposed over the openings 1244.

Associated with the louver 1200 are fans 1220 that are aligned with theopenings 1240 such that operation of the fan 1220 moves air through theopening from the backside 1248 of the louver to the front side of thelouver 1244. Any type fan 1220 may be used that is sized to fit on alouver. Numerous computer fans are known in the art and as such the fan1220 is not described in detail. The fan may be permanently mounted inthe louver or connected with screws, bolts, clips or any other connectormeans. The louver 1200 may have one or more fans 1200 in the louver andif a fan is not mounted in an opening 1240, then the opening may becovered with a cover or other element to deflect and direct the airflowaccording to the position of the louver. The fans 1200 may be singlespeed, multispeed, or variable speed.

The position of the louver is determined by a louver angle controlmodule 1228 that is configured to generate control signals which areprovided to a motor 1230 or other position control device capable ofmoving the angle of the louver 1200. Any type controller 1228 and motor1230 may be used as discussed therein. In addition, the controller 1228and motor 1230 may control a single louver, a group of louvers, or allthe louvers in the frame of louvers. In addition, it is contemplatedthat in the group of louvers at the back of a cabinet, one, a portion,or all of the louvers may have fans incorporated therein. For example,the bottom louvers, near the bottom of the cabinet, may have low airflow causing heat to accumulate and to address this issue the louvers atthe bottom of cabinet may have fans installed to boost air flow anddirect air flow upward.

Controlling and/or providing power to the fans 1220 are wires whichconnect to a fan controller 1224. In this embodiment, the fan controller1224 is configured to individually control each fan's operation. Inother embodiments, all the fans may function in a unified manner. Thefan controller 1224 may receive input from other sources, such assensors or user input. In one embodiment, a memory associated with thecontroller 1224 includes a table of stored temperatures for differentsensor locations and a corresponding fan speed and/or louver angle. Thismay be referred to as a look up table. In other embodiments, one or morealgorithms receive data regarding one or more of temperature, systemcomputing load, air speed or flow, energy cost, time of day, and anyother factor regarding the server room, cabinets, load, cabinets, or thecooling system to generate louver angle control signals and fan speedcontrol signals.

FIG. 13A and 13B illustrates exemplary adjustable legs for a framecontaining louvers for use at the back of a cabinet. In reference toFIG. 13A, the frame 1304 is configured to support the louvers. At ornear the bottom of the frame 1304 is a leg 1312 that forms a C-channelconfigured to accept the frame 1304 therein. One or more bolts 1320extend through one or more frame openings 1224 and one or more legopenings 1228. The bolts 1320 may be removed and the frame 1304 movedupward or downward in the C-channel of the leg 1312 to raise or lowerthe frame and louvers. To secure the frame 1304 to leg 1312 after heightadjustment, the bolts 1320 are inserted through the openings 1324 andsecure. Any other securing device other than bolts may also be used. Inone embodiment the leg 1312 also includes feet 1330 with one or moreopenings there through to secure the leg to the floors, such as withbolts, pins or screws.

FIG. 13B illustrates an alternative embodiment of an adjustable heightleg. In this embodiment, an upper leg 1360 cooperates with a lower leg1364 to adjust the height of the upper leg 1360. In this embodiment theinterior dimensions of the upper leg 1360 is greater than the outdimensions of the lower leg 1364 allowing the lower leg to fit withinthe upper leg. The upper leg 1360 and lower leg 1364 have two or moreopenings 1368 through which a bolt 1372 or other securing device isplaced. In operation the upper leg 1360 may be moved relative to thelower leg 1364 to adjust the height of the upper leg and the frame. Thebolt 1372 secures the upper leg 1360 in place relative to the lower leg1364. Slip resistant feet 1376 may be placed at the bottom of the lowerleg 1364.

FIG. 14 is a block diagram showing example or representative computingdevices and associated elements that may be used to implement thesystems method and apparatus described herein. FIG. 14 shows an exampleof a generic computing device 1400A and a generic mobile computingdevice 1450A, which may be used with the techniques described here.Computing device 1400A is intended to represent various forms of digitalcomputers, such as laptops, desktops, workstations, personal digitalassistants, servers, blade servers, mainframes, and other appropriatecomputers. Computing device 1450A is intended to represent various formsof mobile devices, such as personal digital assistants, cellulartelephones, smart phones, and other similar computing devices. Thecomponents shown here, their connections and relationships, and theirfunctions, are meant to be exemplary only, and are not meant to limitimplementations of the inventions described and/or claimed in thisdocument.

Computing device 1400A includes a processor 1402A, memory 1404A, astorage device 1406A, a high-speed interface or controller 1408Aconnecting to memory 1404A and high-speed expansion ports 1410A, and alow-speed interface or controller 1412A connecting to low-speed bus1414A and storage device 1406A. Each of the components 1402A, 1404A,1406A, 1408A, 1410A, and 1412A, are interconnected using various busses,and may be mounted on a common motherboard or in other manners asappropriate. The processor 1402A can process instructions for executionwithin the computing device 1400A, including instructions stored in thememory 1404A or on the storage device 1406A to display graphicalinformation for a GUI on an external input/output device, such asdisplay 1416A coupled to high-speed controller 1408A. In otherimplementations, multiple processors and/or multiple buses may be used,as appropriate, along with multiple memories and types of memory. Also,multiple computing devices 1400A may be connected, with each deviceproviding portions of the necessary operations (e.g., as a server bank,a group of blade servers, or a multi-processor system).

The memory 1404A stores information within the computing device 1400A.In one implementation, the memory 1404A is a volatile memory unit orunits. In another implementation, the memory 1404A is a non-volatilememory unit or units. The memory 1404A may also be another form ofcomputer-readable medium, such as a magnetic or optical disk.

The storage device 1406A is capable of providing mass storage for thecomputing device 1400A. In one implementation, the storage device 1406Amay be or contain a computer-readable medium, such as a floppy diskdevice, a hard disk device, an optical disk device, or a tape device, aflash memory or other similar solid state memory device, or an array ofdevices, including devices in a storage area network or otherconfigurations. A computer program product can be tangibly embodied inan information carrier. The computer program product may also containinstructions that, when executed, perform one or more methods, such asthose described above. The information carrier is a computer- ormachine-readable medium, such as the memory 1404A, the storage device1406A, or memory on processor 1402A.

The high-speed controller 1408A manages bandwidth-intensive operationsfor the computing device 1400A, while the low-speed controller 1412Amanages lower bandwidth-intensive operations. Such allocation offunctions is exemplary only. In one implementation, the high-speedcontroller 1408A is coupled to memory 1404A, display 1416A (e.g.,through a graphics processor or accelerator), and to high-speedexpansion ports 1410A, which may accept various expansion cards (notshown). In the implementation, low-speed controller 1412A is coupled tostorage device 1406A and low-speed bus 1414A. The low-speed bus 1414,which may include various communication ports (e.g., USB, Bluetooth,Ethernet, wireless Ethernet) may be coupled to one or more input/outputdevices, such as a keyboard, a pointing device, a scanner, or anetworking device such as a switch or router, e.g., through a networkadapter.

The computing device 1400A may be implemented in a number of differentforms, as shown in the figure. For example, it may be implemented as astandard server 1420A, or multiple times in a group of such servers. Itmay also be implemented as part of a rack server system 1424A. Inaddition, it may be implemented in a personal computer such as a laptopcomputer 1422A. Alternatively, components from computing device 1400Amay be combined with other components in a mobile device (not shown),such as device 1450A. Each of such devices may contain one or more ofcomputing device 1400A, 1450A, and an entire system may be made up ofmultiple computing devices 1400A, 1450A communicating with each other.

Computing device 1450A includes a processor 1452A, memory 1464A, aninput/output device, such as a display 1454A, a communication interface1466A, and a transceiver 1468A, among other components. The device 1450Amay also be provided with a storage device, such as a microdrive orother device, to provide additional storage. Each of the components1450A, 1452A, 1464A, 1454A, 1466A, and 1468A, are interconnected usingvarious buses, and several of the components may be mounted on a commonmotherboard or in other manners as appropriate.

The processor 1452A can execute instructions within the computing device1450A, including instructions stored in the memory 1464A. The processormay be implemented as a chipset of chips that include separate andmultiple analog and digital processors. The processor may provide, forexample, for coordination of the other components of the device 1450A,such as control of user interfaces, applications run by device 1450A,and wireless communication by device 1450A.

Processor 1452A may communicate with a user through control interface1458A and display interface 1456A coupled to a display 1454A. Thedisplay 1454A may be, for example, a TFT LCD (Thin-Film-TransistorLiquid Crystal Display) or an OLED (Organic Light Emitting Diode)display, or other appropriate display technology. The display interface1456A may comprise appropriate circuitry for driving the display 1454Ato present graphical and other information to a user. The controlinterface 1458A may receive commands from a user and convert them forsubmission to the processor 1452A. In addition, an external interface1462A may be provided in communication with processor 1452A, so as toenable near area communication of device 1450A with other devices.External interface 1462A may provide, for example, for wiredcommunication in some implementations, or for wireless communication inother implementations, and multiple interfaces may also be used.

The memory 1464A stores information within the computing device 1450A.The memory 1464A can be implemented as one or more of acomputer-readable medium or media, a volatile memory unit or units, or anon-volatile memory unit or units. Expansion memory 1474A may also beprovided and connected to device 1450A through expansion interface1472A, which may include, for example, a SIMM (Single In Line MemoryModule) card interface. Such expansion memory 1474A may provide extrastorage space for device 1450A, or may also store applications or otherinformation for device 1450A. Specifically, expansion memory 1474A mayinclude instructions to carry out or supplement the processes describedabove, and may include secure information also. Thus, for example,expansion memory 1474A may be provide as a security module for device1450A, and may be programmed with instructions that permit secure use ofdevice 1450A. In addition, secure applications may be provided via theSIMM cards, along with additional information, such as placingidentifying information on the SIMM card in a non-hackable manner.

The memory may include, for example, flash memory and/or NVRAM memory,as discussed below. In one implementation, a computer program product istangibly embodied in an information carrier. The computer programproduct contains instructions that, when executed, perform one or moremethods, such as those described above. The information carrier is acomputer- or machine-readable medium, such as the memory 1464A,expansion memory 1474A, or memory on processor 1452A, that may bereceived, for example, over transceiver 1468A or external interface1462A.

Device 1450A may communicate wirelessly through communication interface1466A, which may include digital signal processing circuitry wherenecessary. Communication interface 1466A may provide for communicationsunder various modes or protocols, such as GSM voice calls, SMS, EMS, orMMS messaging, CDMA, TDMA, PDC, WCDMA, CDMA2000, or GPRS, among others.Such communication may occur, for example, through radio-frequencytransceiver 1468A. In addition, short-range communication may occur,such as using a Bluetooth, Wifi, or other such transceiver (not shown).In addition, GPS (Global Positioning system) receiver module 1470A mayprovide additional navigation- and location-related wireless data todevice 1450A, which may be used as appropriate by applications runningon device 1450.

Device 1450A may also communicate audibly using audio codec 1460, whichmay receive spoken information from a user and convert it to usabledigital information. Audio codec 1460A may likewise generate audiblesound for a user, such as through a speaker, e.g., in a handset ofdevice 1450A. Such sound may include sound from voice telephone calls,may include recorded sound (e.g., voice messages, music files, etc.) andmay also include sound generated by applications operating on device1450A.

The computing device 1450A may be implemented in a number of differentforms, as shown in the figure. For example, it may be implemented as acellular telephone 1480A. It may also be implemented as part of a smartphone 1482A, personal digital assistant, a computer tablet, or othersimilar mobile device.

Thus, various implementations of the systems and techniques describedhere can be realized in digital electronic circuitry, integratedcircuitry, specially designed ASICs (application specific integratedcircuits), computer hardware, firmware, software, and/or combinationsthereof. These various implementations can include implementation in oneor more computer programs that are executable and/or interpretable on aprogrammable system including at least one programmable processor, whichmay be special or general purpose, coupled to receive data andinstructions from, and to transmit data and instructions to, a storagesystem, at least one input device, and at least one output device.

These computer programs (also known as programs, software, softwareapplications or code) include machine instructions for a programmableprocessor, and can be implemented in a high-level procedural and/orobject-oriented programming language, and/or in assembly/machinelanguage. As used herein, the terms “machine-readable medium”“computer-readable medium” refers to any computer program product,apparatus and/or device (e.g., magnetic discs, optical disks, memory,Programmable Logic Devices (PLDs)) used to provide machine instructionsand/or data to a programmable processor, including a machine-readablemedium that receives machine instructions as a machine-readable signal.The term “machine-readable signal” refers to any signal used to providemachine instructions and/or data to a programmable processor.

To provide for interaction with a user, the systems and techniquesdescribed here can be implemented on a computer having a display device(e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor)for displaying information to the user and a keyboard and a pointingdevice (e.g., a mouse or a trackball) by which the user can provideinput to the computer. Other kinds of devices can be used to provide forinteraction with a user as well; for example, feedback provided to theuser can be any form of sensory feedback (e.g., visual feedback,auditory feedback, or tactile feedback); and input from the user can bereceived in any form, including acoustic, speech, or tactile input.

The systems and techniques described here can be implemented in acomputing system (e.g., computing device 1400A and/or 1450A) thatincludes a back end component (e.g., as a data server), or that includesa middleware component (e.g., an application server), or that includes afront end component (e.g., a client computer having a graphical userinterface or a Web browser through which a user can interact with animplementation of the systems and techniques described here), or anycombination of such back end, middleware, or front end components. Thecomponents of the system can be interconnected by any form or medium ofdigital data communication (e.g., a communication network). Examples ofcommunication networks include a local area network (“LAN”), a wide areanetwork (“WAN”), and the Internet.

The computing system can include clients and servers. A client andserver are generally remote from each other and typically interactthrough a communication network. The relationship of client and serverarises by virtue of computer programs running on the respectivecomputers and having a client-server relationship to each other.

In the example embodiment, computing devices 1400A and 1450A areconfigured to receive and/or retrieve electronic signal and commandsfrom various other computing devices connected to computing devices1400A and 1450A through a communication network, and store theseelectronic signals within at least one of memory 1404A, storage device1406A, and memory 1464A. Computing devices 1400A and 1450A are furtherconfigured to manage and organize these electronic signals within atleast one of memory 1404A, storage device 1406A, and memory 1464A usingthe techniques described herein.

In addition, the logic flows depicted in the figures do not require theparticular order shown, or sequential order, to achieve desirableresults. In addition, other steps may be provided, or steps may beeliminated, from the described flows, and other components may be addedto, or removed from, the described systems. Accordingly, otherembodiments are within the scope of the following claims.

It is also contemplated that the louvers may be located on the ceilings,roof areas, or the top sections of any element or component. Forexample, the position adjustable louvers may be located on the cool airvents to control the flow of cool air into the data center, such as thecool aisle area, or to direct more cool air to certain areas and lesscool air to other areas. In addition, the adjustable louver may belocated on a roof or ceiling to control the flow of hot or cool air intoour out of any space that is part of or associated with the data center.As describe above, the adjustable louver may be fully open, fullyclosed, or adjustable to any position therebetween. The louvers may alsobe associated with a condenser, air exchanger, air conditioner, or anyother heating or ventilation unit. In one embodiment, the hot airexhaust is used in connection with or directed by adjustable louvers tomelt snow or ice from a roof structure or other portion of a building.It is contemplated that snow or ice may be melted with the heated airdirected to a snowy or icy area.

It will be appreciated that the above embodiments that have beendescribed in detail are merely example or possible embodiments, and thatthere are many other combinations, additions, or alternatives that maybe included. For example, while online gaming has been referred tothroughout, other applications of the above embodiments include onlineor web-based applications or other cloud services.

Also, the particular naming of the components, capitalization of terms,the attributes, data structures, or any other programming or structuralaspect is not mandatory or significant, and the mechanisms thatimplement the invention or its features may have different names,formats, or protocols. Further, the system may be implemented via acombination of hardware and software, as described, or entirely inhardware elements. Also, the particular division of functionalitybetween the various system components described herein is merelyexemplary, and not mandatory; functions performed by a single systemcomponent may instead be performed by multiple components, and functionsperformed by multiple components may instead be performed by a singlecomponent.

Some portions of above description present features in terms ofalgorithms and symbolic representations of operations on information.These algorithmic descriptions and representations may be used by thoseskilled in the data processing arts to most effectively convey thesubstance of their work to others skilled in the art. These operations,while described functionally or logically, are understood to beimplemented by computer programs. Furthermore, it has also provenconvenient at times, to refer to these arrangements of operations asmodules or by functional names, without loss of generality.

Unless specifically stated otherwise as apparent from the abovediscussion, it is appreciated that throughout the description,discussions utilizing terms such as “processing” or “computing” or“calculating” or “determining” or “identifying” or “displaying” or“providing” or the like, refer to the action and processes of a computersystem, or similar electronic computing device, that manipulates andtransforms data represented as physical (electronic) quantities withinthe computer system memories or registers or other such informationstorage, transmission or display devices.

Based on the foregoing specification, the above-discussed embodiments ofthe invention may be implemented using computer programming orengineering techniques including computer software, firmware, hardwareor any combination or subset thereof. Any such resulting program, havingcomputer-readable and/or computer-executable instructions, may beembodied or provided within one or more computer-readable media, therebymaking a computer program product, i.e., an article of manufacture,according to the discussed embodiments of the invention. The computerreadable media may be, for instance, a fixed (hard) drive, diskette,optical disk, magnetic tape, semiconductor memory such as read-onlymemory (ROM) or flash memory, etc., or any transmitting/receiving mediumsuch as the Internet or other communication network or link. The articleof manufacture containing the computer code may be made and/or used byexecuting the instructions directly from one medium, by copying the codefrom one medium to another medium, or by transmitting the code over anetwork.

While the disclosure has been described in terms of various specificembodiments, it will be recognized that the disclosure can be practicedwith modification within the spirit and scope of the claims.

While various embodiments of the invention have been described, it willbe apparent to those of ordinary skill in the art that many moreembodiments and implementations are possible that are within the scopeof this invention. In addition, the various features, elements, andembodiments described herein may be claimed or combined in anycombination or arrangement.

What is claimed is:
 1. A cabinet for storing electronic equipment withassociated air flow direction control system comprising: a cabinetcomprising a front side, rear side, a first side and a second side, thefront side having one or more openings to accept flow of cool air intothe cabinet and the rear side having one or more openings for exit ofwarm air from the rear side of the cabinet, the front side, rear side,first side and second side defining an interior space configured tohouse heat generating electrical equipment within the cabinet; a frameadjacent the rear side of the cabinet, the frame having a first frameside and a second frame side; and two or more louvers adjacent the rearside of the cabinet and extending between the first frame side and thesecond frame side, at least one louver having at least one facepositioned at an angle to direct the warm air exiting the cabinets in adirection other than perpendicular to the rear side of the cabinet. 2.The cabinet of claim 1 further comprising two or more legs connected tothe frame, the two or more legs cooperating with the frame to adjust aheight of the frame in relation to a floor.
 3. The cabinet of claim 1wherein the frame is releasably connected to the cabinet adjacent therear side of the cabinet.
 4. The cabinet of claim 1 wherein the two ormore louvers are fixed to the frame thereby fixing the angle associatedwith the louvers.
 5. The cabinet of claim 1 wherein the two or morelouvers are movable in relation to the frame from a first position to asecond position, the first position establishing a first louver angleand the second position establishing a second louver angle.
 6. Thecabinet of claim 5 further comprising at least one motor associated withat least one frame, the at least one motor being responsive to a controlsignal to change the angle of at least one louver.
 7. The cabinet ofclaim 5 wherein a first group of the two or more louvers are positionedat a first angle and a second group of two or more louvers are positionat a second angle.
 8. An arrangement of cabinets with associated airflow direction control system comprising: a first row of cabinetscomprising two or more cabinets; a second row of cabinets comprising twoor more cabinets, wherein the cabinets in the first row of cabinets andthe second row of cabinets have a front side, rear side, a first sideand a second side, the front side having one or more front openings toaccept flow of cool air into the cabinet and the rear side having one ormore rear openings for exit of warm air from the rear side of thecabinet, the front side, rear side, first side and second side definingan interior space configured to house heat generating electricalequipment within the housing, such that the rear side of the first rowof cabinets faces the rear side of the second row of cabinets therebyestablishing a hot aisle between the first row of cabinets, the secondrow of cabinets, and a floor; a first set of louvers supported by afirst frame that is adjacent the rear side of the first row of cabinets,the first set of louvers extending across at least a portion of the rearside of at least one of the cabinets that form the first row ofcabinets; and a second set of louvers supported by a second frame thatis adjacent the rear side of the second row of cabinets, the second setof louvres extending across at least a portion of the rear side of atleast one of the cabinets that form the second row of cabinets.
 9. Thearrangement of cabinets of claim 8 wherein the first set of louvers andthe second set of louvers are positioned at an angle to direct the warmair exiting the cabinets upward away from the floor.
 10. The arrangementof cabinets of claim 8 wherein the first set of louvers are adjustablebetween a first position, a second position and a third position suchthat the first position directs warm airflow upward, the second positiondirects warm air flow perpendicular to the rear face of the cabinets andthe third position inhibits airflow from the one or more rear openings.11. The arrangement of cabinets of claim 8 further comprising two ormore legs associated with the frame, the two or more legs adjustable tochange a height of the louvers relative to the floor.
 12. Thearrangement of cabinets of claim 8 further comprising at least one motorassociated with at least one louvers, the at least one motor beingresponsive to a motor control signal to change the angle of the at leastone louvers.
 13. The arrangement of cabinets of claim 10, wherein afirst group of the first set of louvers are positioned at a first angleand a second group of the second set of louvers are position at a secondangle.
 14. The arrangement of cabinets of claim 8 further comprising:one or more temperature sensors, one or more air flow sensor, or bothconfigured to generate sensor signals; and a controller configured toreceive and process sensor signals, and responsive to the processinggenerate the motor control signals which control the position of atleast one louvers.
 15. A method for maintaining temperature within acabinet storing electrical equipment within a predetermined rangecomprising: providing a first row of cabinets; providing a second row ofcabinets, the cabinets in the first row of cabinets and the second rowof cabinets include a front side and a rear side, the front side havingone or more front openings to accept flow of cool air into the cabinetand the rear side having one or more rear openings for exit of warm airfrom the rear side of the cabinet, the front side and rear side definingan interior space therebetween configured to house heat generatingelectrical equipment within the interior space, such that the rear sideof the first row of cabinets faces the rear side of the second row ofcabinets thereby establishing a hot aisle between the first row ofcabinets, second row of cabinets; adjusting a first set of louvers todirect airflow exiting the rear side of a cabinet in a directionnon-perpendicular to the rear side of the first row of cabinets, thefirst set of louvers supported by a first frame the rear side of atleast one cabinet that forms the first row of cabinets, the first set oflouvers extending across at least a portion of the rear side of acabinet that forms the first row of cabinets; adjusting a second set oflouvers to direct airflow exiting the rear side of a cabinet in adirection non-perpendicular to the rear side of the second row ofcabinets, the second set of louvers supported by a second frame which isadjacent the rear side of at least one cabinet that forms the second rowof cabinets, the second set of louvers extending across at least aportion of the rear side of the cabinets that form the second row ofcabinets; providing cooling airflow to the front of the first row andsecond row of cabinets, the cooling air flow flowing from the front ofthe cabinets toward the rear of the cabinets resulting in the coolingair flow becoming warm airflow due to the cooling air flow contactingthe heat generating electrical equipment within the interior space ofthe cabinets; directing the air flow with two or more louvers from thefirst row of cabinets in a first direction toward one or more warm airchannels associated with the hot aisle directing the air flow with twoor more louvers from the second row of cabinets in a second directiontoward the one or more warm air channels associated with the hot aisle,wherein the first direction and the second direction are not opposingdirections; cooling the warm airflow from the hot aisle to createcooling air flow; and returning the cooling airflow to the front of thecabinets.
 16. The method of claim 15 wherein the rear side of the firstrow of cabinets faces the rear side of the second row of cabinets. 17.The method of claim 15 wherein at least one louver is positionadjustable by a motor, the motor responsive to a motor control signalfrom a controller.
 18. The method of claim 17 further comprising one ormore temperature sensors, airflow sensors, or both configured to providea sensor signal to the controller such that the motor control signalresponsive to the sensor signal.
 19. The method for of claim 15, furthercomprising increasing air flow with one or more fans mounted to at leastone louver such that adjusting a louver adjusts a position of one ormore fans.
 20. The method for of claim 15, further comprising adjustinga height of one or more legs to change a height of the first set oflouvers and the second set of louvers.